Releases

506 models in 12 months · newest first

New top index

Each step of the frontier
ReleasedModelLabIndexOutput / 1M
9 Nov 2026Claude Fable 5.2New topAnthropic85.6$40.00
28 Oct 2026Gemini 4 CarbonNew topGoogle82.7$10.00
22 Sep 2026Claude Opus 5.5New topAnthropic78.6$20.00
3 Sep 2026GPT-6 AstraNew topOpenAI78.0$50.00
1 Sep 2026Claude Fable 5.1New topAnthropic76.2$50.00
9 Jun 2026Claude Fable 5New topAnthropic74.0$50.00
23 Apr 2026GPT-5.5New topOpenAI69.1$30.00
5 Mar 2026GPT-5.4New topOpenAI64.8$15.00
19 Feb 2026Gemini 3.1 ProNew topGoogle62.3$12.00
5 Feb 2026GPT-5.3 CodexNew topOpenAI62.0$14.00
1 Feb 2026Claude Opus 4.6 (Adaptive)New topAnthropic60.0—
18 Dec 2025GPT-5.2-CodexNew topOpenAI59.9$14.00
11 Dec 2025GPT-5.2New topOpenAI59.0$14.00
18 Nov 2025Gemini 3 ProNew topGoogle57.9$12.00
13 Nov 2025GPT-5.1New topOpenAI55.3$10.00
7 Aug 2025GPT-5New topOpenAI55.0$10.00
7 Aug 2025GPT-5 (high)New topOpenAI53.6$10.00
16 Apr 2025o3New topOpenAI51.8$8.00
1 Mar 2025Gemini 2.5 ProNew topGoogle46.6$10.00
1 Dec 2024o1New topOpenAI44.5$60.00
13 May 2024GPT-4oNew topOpenAI28.7$10.00
1 Mar 2024Claude 3 HaikuNew topAnthropic22.0$1.25

Release dates from BenchLM. Index and price as of today. "New top": the model had a higher index than every model released before it, among models with medium or high confidence.